为明确煤层在含煤地层层序划分中的作用,在分析陆相成煤模式、海侵过程成煤理论、海侵事件成煤理论、幕式成煤理论以及不同体系域成煤理论共5种成煤模式原理的基础上,采用沉积学、煤地质学、古生物学以及地球化学等方法,分析提炼出不同成煤理论的立论基础、成煤特点、煤层成因以及发生背景等多方面的特征,总结出不同成煤理论下煤层层序划分的原理。结果表明,不同成煤理论的分析应该综合起来进行研究;可以将华北地区太原西山含煤层沉积划分为8个3级层序,其中陆表海沉积序列可以划分出5个二元结构的三级层序。
In order to make clear the application of coal seam in the sequence division of coal bearing formation, five coal accumulation theories including coal accumulation of continental facies, coal accumulation of transgressive process, coal accumulation of transgressive event, episodic coal accumulation and coal accumulation of different system were analyzed. The theoretical foundation, coal accumulation characteristics, the causes of coal seam and the occurrence background of different theories were analyzed and the sequence division theory was summarized by the methods of sedimentology, coal geology, pa- leontology and geochemistry. The results show that different coal accumulation theories should be integrated. Considering the actions of coal seam in the sequence stratum division, the sedimentation division with coal seam in Xishan, Taiyuan of North China should be divided into eight three-grade sequences, and the sedimentation sequence of continental sea should be divid- ed into five three-grade sequences with dualistic structure.